Market analysis · 2025-2026

Timber or PVC? Where the Portuguese window market is heading

Cost, efficiency, durability and resale value. We compared the two most requested materials so you can decide on figures rather than hunches.

We are asked this almost every day: is it worth paying for timber windows, or is PVC the sensible choice? The honest answer is that there is no absolute winner. There is a right material for your project, your budget and the character of your house. Here are the numbers, and the trends shaping the Portuguese market in 2025-2026.

In short

PVC leads on insulation per euro spent and on near-zero maintenance. Timber is growing in the premium segment and in renovation work, where looks, resale value and sustainability outweigh the initial price.

What changed in the market

Rising energy costs and efficiency incentives turned the window from a cosmetic expense into an investment decision. In 2025-2026 the Portuguese buyer asks about thermal and acoustic performance first, and about colour and material second.

At the same time, urban renovation in Lisbon and Porto brought demand for timber back. In buildings with character, both the regulations and good taste call for frames faithful to the original.

Head to head

The table below covers the essentials. Note that we are comparing products of equivalent quality: a cheap timber window against a premium PVC one tells a very different story.

CriterionAdvantage
Insulation per euroPVC
Looks and resale valueTimber
MaintenancePVC
SustainabilityTimber
Period renovationTimber
Initial costPVC

Energy efficiency

Both materials now reach excellent insulation figures. A six-chamber PVC profile gets to Uw ≈ 0.9 W/m²·K; an 80 mm timber window with triple glazing goes down to Uw ≈ 0.8 W/m²·K. In practice the thermal gap between good PVC and good timber is small. What decides the outcome is the glass, the spacer and the installation.

Durability and maintenance

Quality PVC lasts 30 to 40 years without painting; cleaning is enough. Modern timber, protected in four coats, lasts just as many decades but asks for the finish to be refreshed every 8 to 12 years. Timber's advantage is that it can be repaired almost indefinitely. PVC's advantage is that it asks for almost nothing.

How to decide

Choose according to your priority:

  • Budget and maximum efficiency per euro → PVC.
  • Renovation, character and resale value → timber.
  • Very large openings and minimal sightlines → consider aluminium as well.

If you are unsure, ask us. We look at solar orientation, noise and the style of your house before recommending anything.

Frequently asked questions

Quick answers to the questions we hear most.

Timber or PVC: which is cheaper?

PVC is generally 20 to 40% cheaper up front. Timber earns its place when looks, period renovation or resale value are the priority.

Which insulates better against noise?

Both insulate very well with the right glass. The deciding factor is acoustic glazing (asymmetric or laminated), not the frame material.

Is timber a lot of maintenance?

No. A modern timber window only needs its finish refreshed every 8 to 12 years, depending on sun exposure and how close it is to the sea.

Which adds more value to a property?

Timber, especially in villas and period buildings, is generally perceived as premium and tends to add more value.

Free consultation

Talk to a specialist

Speak to a specialist and find the right solution for your project, with tailored technical advice and no obligation.

SKLO specialist SKLO specialist SKLO specialist SKLO specialist SKLO specialist SKLO specialist SKLO specialist

Request a Quote

Free specialist advice on your project

Request a Quote
Your data is protected · We reply as soon as possible
Aluminium Windows PVC Windows Wooden Windows Steel Windows Projects About us Showroom Contact